plural of radiant

Radiating light and/or heat. / Emitted as radiation. / Beaming with vivacity and happiness. / Strikingly beautiful. / Emitting or proceeding as if from a center.

A point source from which radiation is emitted. / (astronomy) The apparent origin, in the night sky, of a meteor shower.

(rare) radiance

Energy in a form that can radiate, generally electromagnetic energy.

plural of radiant energy